Question

rewatch question 3 3/10 what is the line called that is perpendicular to the surface at the point of incidence? scroll more refracted ray normal line incident ray emergent ray

Explanation:

In optics, the normal line is defined as the line perpendicular to the surface at the point of incidence. It serves as a reference for measuring angles of incidence and reflection. The refracted ray is the ray that bends when entering a different medium. The incident ray is the incoming ray before interaction with the surface. The emergent ray is the ray coming out after passing through a medium.

Answer:

Normal line